public class Test01 {
    public static void main(String[] args){
        class01 class01 = new class01();
        new Thread(()->{
            for (int i = 0; i < 26; i++) {
                try {
                    class01.printNum();
                } catch (InterruptedException e) {
                    throw new RuntimeException(e);
                }
            }
        }).start();

        new Thread(()->{
            for (int i = 0; i < 26; i++) {
                try {
                    class01.printChar();
                } catch (InterruptedException e) {
                    throw new RuntimeException(e);
                }
            }
        }).start();
    }

}
